Gerald M. Blumenstock

CIK: 0001979418

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (21.4%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (28.6%)

Compensation grants

Other (G, F, J, C, D, …)7 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ACLS

AXCELIS TECHNOLOGIES INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (14 total)

ACLS
AXCELIS TECHNOLOGIES INC
Jun 15, 2026
Tax Payment(F)
Direct
506 shares at avg. $191.60$97K
ACLS
AXCELIS TECHNOLOGIES INC
May 21, 2026
Sale(S)
Direct
1.2K shares at avg. $152.70$177K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Award(A)
Direct
2.7K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Tax Payment(F)
Direct
345 shares at avg. $155.18$54K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Tax Payment(F)
Direct
744 shares at avg. $155.18$115K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2026
Award(A)
Direct
2.7K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 14, 2026
Sale(S)
Direct
1K shares at avg. $162.31$165K
ACLS
AXCELIS TECHNOLOGIES INC
Mar 2, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $86.58$97K
ACLS
AXCELIS TECHNOLOGIES INC
Dec 11, 2025
Sale(S)
Direct
3K shares at avg. $89.46$271K
ACLS
AXCELIS TECHNOLOGIES INC
Jun 16, 2025
Tax Payment(F)
Direct
506 shares at avg. $68.96$35K
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Award(A)
Direct
6.1K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Award(A)
Direct
6.1K shares-
ACLS
AXCELIS TECHNOLOGIES INC
May 15, 2025
Tax Payment(F)
Direct
345 shares at avg. $62.67$22K
ACLS
AXCELIS TECHNOLOGIES INC
Feb 28, 2025
Tax Payment(F)
Direct
748 shares at avg. $54.79$41K

		Type	Shares	Price		Ownership
Jun 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	506	$191.60	$96,950	Direct
May 21, 2026	ACLS AXCELIS TECHNOLOGIES INC	Sale(S)	1,161	$152.70	$177,285	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	2,725	-	$0	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	345	$155.18	$53,537	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	744	$155.18	$115,454	Direct
May 15, 2026	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	2,725	-	$0	Direct
May 14, 2026	ACLS AXCELIS TECHNOLOGIES INC	Sale(S)	1,015	$162.31	$164,750	Direct
Mar 2, 2026	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	1,121	$86.58	$97,056	Direct
Dec 11, 2025	ACLS AXCELIS TECHNOLOGIES INC	Sale(S)	3,034	$89.46	$271,422	Direct
Jun 16, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	506	$68.96	$34,894	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	6,148	-	-	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Award(A)	6,148	-	-	Direct
May 15, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	345	$62.67	$21,621	Direct
Feb 28, 2025	ACLS AXCELIS TECHNOLOGIES INC	Tax Payment(F)	748	$54.79	$40,983	Direct

1-14 of 14 transactions

About Blumenstock Gerald M

Blumenstock Gerald M (SEC CIK 0001979418) files insider reports with the SEC as EVP, Research, Dev. & Eng. of AXCELIS TECHNOLOGIES INC (ACLS).

Signal8 holds 9 ownership filings by Blumenstock Gerald M, all Form 4s, filed between Mar 4, 2025 and Jun 16, 2026. Those filings report 14 transactions, from Feb 28, 2025 to Jun 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Blumenstock Gerald M's filings is in BEVERLY, MA.

Recent filings by Blumenstock Gerald M

Jun 15, 2026: Tax withholding of ACLS shares (Form 4, code F).
May 21, 2026: Open-market sale of ACLS shares (Form 4, code S).
May 15, 2026: Grant or award of ACLS shares (Form 4, code A).
May 15, 2026: Tax withholdings of ACLS shares (2 lines, Form 4, code F).
May 15, 2026: Grant or award of ACLS shares (Form 4, code A).

Other insiders filing for AXCELIS TECHNOLOGIES INC (ACLS)

Redinbo Greg, EVP and Chief Strategy Officer
Tatnall Christopher, EVP Global Customer Operations
Ryzhik David, SVP Interim CFO
Sayiner Necip, Director
Mahoney Robert John, EVP Global Operations
Sutton Todd, VP Corporate Controller

How to read Form 4 transaction codes